code: def __getitem__(self, index):
      # TODO
      # 1. Read one data from file (e.g. using numpy.fromfile, PIL.Image.open).
      # 2. Preprocess the data (e.g. torchvision.Transform).
      # 3. Return a data pair (e.g. image and label).
      pass
  
file_path: pytorch-tutorial/tutorials/01-basics/pytorch_basics/main.py
imports: import torch
  import torchvision
  import torch.nn
  import numpy
  import torchvision.transforms
label_desc: Use image node_id 2 for calling the CustomDataset obj's underlying member method code with example usage: obj.__getitem__(index) without return types